Backstage Library Works
- Providing digitizing, retrospective conversion, cataloging, record upgrading in more than 100 languages, reclassification and related services, including complicated conversions and on-site scanning of irreplaceable source materials.
- http://www.marclink.com/main.html

Special Libraries Cataloguing
- Offers cataloguing services to special libraries, including corporate resource centers.
- http://www.slc.bc.ca/

Cassidy Cataloguing Services
- Offers cataloging services and consulting for law and business libraries.
- http://www.cassidycat.com/